Excavating machine working device with adjustable hinge points and engineering vehicle

Abstract

The invention discloses an excavating machine working device with adjustable hinge points and an engineering vehicle. The excavating machine working device comprises a movable arm, a bucket rod, a single connecting rod, an adjustable connecting rod assembly, a connecting rod variable-amplitude oil cylinder and a movable arm oil cylinder. The tail end of the movable arm is hinged to a main machineframe, the middle of the bucket rod is hinged to the front end of the movable arm, the tail end of the adjustable connecting rod assembly is hinged to the front end of the single connecting rod, the front end of the adjustable connecting rod assembly is hinged to the bucket rod, and a plurality of hinge points are arranged on the bucket rod. The connecting positions of the adjustable connecting rod assembly and the hinge points of the bucket rod are adjusted, so that the device can adapt to different work conditions of a mine. One end of the connecting rod variable-amplitude oil cylinder is hinged to the adjustable connecting rod assembly, the other end of the connecting rod variable-amplitude oil cylinder is hinged to the front end of the top face of the movable arm, one end of the movable arm oil cylinder is hinged to the side face of the movable arm, and the other end is hinged to the main machine frame. Under the condition that the working pressure of a hydraulic system and the cylinder diameter of an oil cylinder are not changed, the excavation force of the working device is greatly improved.

Description

technical field [0001] The invention relates to an actuator of construction machinery, in particular to an excavating mechanical working device with adjustable hinge points. Background technique [0002] During the construction process of construction machinery used in mining, construction and other industries, it is often necessary to excavate cracked rocks, break frozen soil, and dig asphalt roads. The actuator used by the excavator to complete the excavation and loading actions is called the working device. It is generally composed of a boom, a stick, a bucket (or other equipment), a boom cylinder, a stick cylinder, and a bucket cylinder. Hinged joints are used to achieve a wide range of operations. [0003] At present, in order to meet the requirements of excavation force, the equipment is often equipped with oil cylinders with larger bores. Due to the harsh working conditions, the vibration and impact directly act on the oil cylinders. After the excavator works for a l...

AI Technical Summary

Problems solved by technology

[0003] At present, in order to meet the requirements of digging force, the equipment is often equipped with a cylinder with a larger bore. Due to the harsh working conditions, the vibration and impact directly act on the cylinder. After the excavator works for a long time, there will be problems such as large internal leakage of the cylinder and a significant drop in digging force.

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